Fuel Type To create heat, some form of fuel is required. Fuel Type specifies what the product uses as an input to create heat.

Natural Gas

Vent Type Products that use combustion (burning) of fuel to create heat also create potentially dangerous gasses that need to be exhausted (AKA "Vented"). Depending on the product, venting can be done via a chimney, through a side wall, or use a second vent to provide fresh air to the appliance.

Chimney Vent

Modulating/Staging Stages are unique speeds or levels that equipment can operate at. More stages allow for better fine-tuned control of output, which improves comfort and efficiency. Modulating equipment can operate across a range of levels, giving the highest level of fine-tuned control. Learn More

Single Stage

Speed Settings

Multi-Speed

Orientation Orientation describes the direction that air will flow through a piece of equipment. (e.g. air will flow horizontally through a "Horizontal" unit heater.) Most equipment will only function properly if installed in the proper orientation.

Goodman established itself as the largest HVAC manufacturer in the US by producing high-quality, efficient equipment and providing it to homeowners at a great value. The GDS8 single-stage, multi-speed furnace utilizes Goodman's superior heat exchanger design to provide efficient, reliable heating to your home. This furnace also excels at providing comfortable circulation in a variety of conditions thanks to its four-speed blower motor. Designed with some of the most dependable components available, the GDS8 furnace is built to last. It is also equipped with a self-diagnosing control board for quick maintenance, and is backed by Goodman's generous warranty. With the GDS8, you're getting comfort and peace of mind.

Product Features

Advanced Heat Exchanger DesignThe GDS8 furnace employs a reliable dual-diameter tubular heat exchanger design. Aluminized steel is used in construction for incredibly efficient heat transfer, and a wrinkle-bend is applied to the tubes to enhance the heat exchanger's dependability and longevity.

Quiet ComfortGoodman takes great pride in producing equipment that doesn't disrupt your home. The blower, motor, and igniter of the GDS80403AX were selected for their incredibly low sound levels.

Secure CabinetAll GDS8 furnaces are protected by a durable steel cabinet with a long-lasting powder paint finish. The heat exchanger section is lined with foil-insulation to prevent heat loss and the entire cabinet is rated for less than 2% air leakage.

Easy IntegrationThe GDS80403AX makes it simple to enhance your system with a humidifier; just wire it directly to the low-voltage terminal on the control board.

Q: Can this unit be used in California?by Francisco from California on December 28, 2015

A: Goodman makes special Low NOx models for use in California and other areas that limit nitrous oxide emissions. These models can be easily found and identified because that have an 'X' instead of an 'N' at the end of the model number. All of the high-efficiency models (AFUE >= 90%), are compliant with these emissions regulations. by Chris, Product Expert

I bought this Goodman downflow furnace last September of 2012 and now this is the beginning of the second winter with no problems whatsoever. I replaced my 35 year old inefficient furnace myself with this and have nothing but great results.

First, EComfort was and has been perfect in great price, quick knowledge of all my questions, and fast and careful shipping. The Goodman furnace is high quality throughout and was straightforward in the instructions and install. My gas and electric bill immediately showed great improvements. I give a definite 5 star rating to EComfort for competitive pricing, knowledgeable sales staff, and informative instructions and data here on their products; and I give 5 stars to Goodman for a quality built product with the best warranty. This year I decided to repeat with two of the best and go with EComfort and Goodman again for self install of my old AC unit too, which is ongoing and I will post separate results upon completion. I have seen some negative reviews on the web for Goodman products, but as an Electrical Engineer of over 20 years with mechanical and HVAC experience, I don't believe most of them - the quality is there throughout on Goodman from the product to instructions/ specifications to the best of warranties available - I think most 'bad' reviews are posted by high dollar HVAC contractors and installers who do not make as much money on a Goodman and want you to go to a more expensive unit to benefit their wallet. Thank you EComfort (and Victor - a fantastic and helpful sales associate).

I bought this Goodman downflow furnace last September of 2012 and now this is the beginning of the second winter with no problems whatsoever. I replaced my 35 year old inefficient furnace myself with this and have nothing but great results.

First, EComfort was and has been perfect in great price, quick knowledge of all my questions, and fast and careful shipping. The Goodman furnace is high quality throughout and was straightforward in the instructions and install. My gas and electric... more

Tip: What is a Related Review?* Related reviews were originally written for products that are very similar to this one. While the reviewed product may differ in color, size, fuel type, or another aspect, we believe it is applicable to this model.